diff --git a/drivers/i2c/busses/i2c-octeon-core.c b/drivers/i2c/busses/i2c-octeon-core.c
index baf6b27f3752..c22a8f3d78d6 100644
--- a/drivers/i2c/busses/i2c-octeon-core.c
+++ b/drivers/i2c/busses/i2c-octeon-core.c
@@ -135,6 +135,32 @@ static void octeon_i2c_hlc_disable(struct octeon_i2c *i2c)
 	octeon_i2c_ctl_write(i2c, TWSI_CTL_ENAB);
 }
 
+static void octeon_i2c_block_enable(struct octeon_i2c *i2c)
+{
+	u64 mode;
+
+	if (i2c->block_enabled || !OCTEON_REG_BLOCK_CTL(i2c))
+		return;
+
+	i2c->block_enabled = true;
+	mode = __raw_readq(i2c->twsi_base + OCTEON_REG_MODE(i2c));
+	mode |= TWSX_MODE_BLOCK_MODE;
+	octeon_i2c_writeq_flush(mode, i2c->twsi_base + OCTEON_REG_MODE(i2c));
+}
+
+static void octeon_i2c_block_disable(struct octeon_i2c *i2c)
+{
+	u64 mode;
+
+	if (!i2c->block_enabled || !OCTEON_REG_BLOCK_CTL(i2c))
+		return;
+
+	i2c->block_enabled = false;
+	mode = __raw_readq(i2c->twsi_base + OCTEON_REG_MODE(i2c));
+	mode &= ~TWSX_MODE_BLOCK_MODE;
+	octeon_i2c_writeq_flush(mode, i2c->twsi_base + OCTEON_REG_MODE(i2c));
+}
+
 /**
  * octeon_i2c_hlc_wait - wait for an HLC operation to complete
  * @i2c: The struct octeon_i2c
@@ -281,6 +307,7 @@ static int octeon_i2c_start(struct octeon_i2c *i2c)
 	u8 stat;
 
 	octeon_i2c_hlc_disable(i2c);
+	octeon_i2c_block_disable(i2c);
 
 	octeon_i2c_ctl_write(i2c, TWSI_CTL_ENAB | TWSI_CTL_STA);
 	ret = octeon_i2c_wait(i2c);
@@ -604,6 +631,119 @@ static int octeon_i2c_hlc_comp_write(struct octeon_i2c *i2c, struct i2c_msg *msg
 	return ret;
 }
 
+/**
+ * octeon_i2c_hlc_block_comp_read - high-level-controller composite block read
+ * @i2c: The struct octeon_i2c
+ * @msgs: msg[0] contains address, place read data into msg[1]
+ *
+ * i2c core command is constructed and written into the SW_TWSI register.
+ * The execution of the command will result in requested data being
+ * placed into a FIFO buffer, ready to be read.
+ * Used in the case where the i2c xfer is for greater than 8 bytes of read data.
+ *
+ * Returns: 0 on success, otherwise a negative errno.
+ */
+static int octeon_i2c_hlc_block_comp_read(struct octeon_i2c *i2c, struct i2c_msg *msgs)
+{
+	int ret;
+	u16 len;
+	u64 cmd;
+
+	octeon_i2c_hlc_enable(i2c);
+	octeon_i2c_block_enable(i2c);
+
+	/* Write (size - 1) into block control register */
+	len = msgs[1].len - 1;
+	octeon_i2c_writeq_flush((u64)len, i2c->twsi_base + OCTEON_REG_BLOCK_CTL(i2c));
+
+	/* Prepare core command */
+	cmd = SW_TWSI_V | SW_TWSI_R | SW_TWSI_SOVR | SW_TWSI_OP_7_IA;
+	cmd |= (u64)(msgs[0].addr & 0x7full) << SW_TWSI_ADDR_SHIFT;
+
+	/* Send core command */
+	ret = octeon_i2c_hlc_read_cmd(i2c, msgs[0], cmd);
+	if (ret)
+		return ret;
+
+	cmd = __raw_readq(i2c->twsi_base + OCTEON_REG_SW_TWSI(i2c));
+	if ((cmd & SW_TWSI_R) == 0)
+		return octeon_i2c_check_status(i2c, false);
+
+	/* read data in FIFO */
+	octeon_i2c_writeq_flush(TWSX_BLOCK_STS_RESET_PTR,
+				i2c->twsi_base + OCTEON_REG_BLOCK_STS(i2c));
+	for (u16 i = 0; i <= len; i += 8) {
+		/* Byte-swap FIFO data and copy into msg buffer */
+		__be64 rd = cpu_to_be64(__raw_readq(i2c->twsi_base + OCTEON_REG_BLOCK_FIFO(i2c)));
+
+		memcpy(&msgs[1].buf[i], &rd, min(8, msgs[1].len - i));
+	}
+
+	octeon_i2c_block_disable(i2c);
+	return ret;
+}
+
+/**
+ * octeon_i2c_hlc_block_comp_write - high-level-controller composite block write
+ * @i2c: The struct octeon_i2c
+ * @msgs: msg[0] contains address, msg[1] contains data to be written
+ *
+ * i2c core command is constructed and write data is written into the FIFO buffer.
+ * The execution of the command will result in HW write, using the data in FIFO.
+ * Used in the case where the i2c xfer is for greater than 8 bytes of write data.
+ *
+ * Returns: 0 on success, otherwise a negative errno.
+ */
+static int octeon_i2c_hlc_block_comp_write(struct octeon_i2c *i2c, struct i2c_msg *msgs)
+{
+	bool set_ext;
+	int ret;
+	u16 len;
+	u64 cmd, ext = 0;
+
+	octeon_i2c_hlc_enable(i2c);
+	octeon_i2c_block_enable(i2c);
+
+	/* Write (size - 1) into block control register */
+	len = msgs[1].len - 1;
+	octeon_i2c_writeq_flush((u64)len, i2c->twsi_base + OCTEON_REG_BLOCK_CTL(i2c));
+
+	/* Prepare core command */
+	cmd = SW_TWSI_V | SW_TWSI_SOVR | SW_TWSI_OP_7_IA;
+	cmd |= (u64)(msgs[0].addr & 0x7full) << SW_TWSI_ADDR_SHIFT;
+
+	/* Set parameters for extended message (if required) */
+	set_ext = octeon_i2c_hlc_ext(i2c, msgs[0], &cmd, &ext);
+
+	/* Write msg into FIFO buffer */
+	octeon_i2c_writeq_flush(TWSX_BLOCK_STS_RESET_PTR,
+				i2c->twsi_base + OCTEON_REG_BLOCK_STS(i2c));
+	for (u16 i = 0; i <= len; i += 8) {
+		__be64 buf = 0;
+
+		/* Copy 8 bytes or remaining bytes from message buffer */
+		memcpy(&buf, &msgs[1].buf[i], min(8, msgs[1].len - i));
+
+		/* Byte-swap message data and write into FIFO */
+		buf = cpu_to_be64(buf);
+		octeon_i2c_writeq_flush((u64)buf, i2c->twsi_base + OCTEON_REG_BLOCK_FIFO(i2c));
+	}
+	if (set_ext)
+		octeon_i2c_writeq_flush(ext, i2c->twsi_base + OCTEON_REG_SW_TWSI_EXT(i2c));
+
+	/* Send command to core (send data in FIFO) */
+	ret = octeon_i2c_hlc_cmd_send(i2c, cmd);
+	if (ret)
+		return ret;
+
+	cmd = __raw_readq(i2c->twsi_base + OCTEON_REG_SW_TWSI(i2c));
+	if ((cmd & SW_TWSI_R) == 0)
+		return octeon_i2c_check_status(i2c, false);
+
+	octeon_i2c_block_disable(i2c);
+	return ret;
+}
+
 /**
  * octeon_i2c_xfer - The driver's xfer function
  * @adap: Pointer to the i2c_adapter structure
@@ -630,13 +770,21 @@ int octeon_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
 			if ((msgs[0].flags & I2C_M_RD) == 0 &&
 			    (msgs[1].flags & I2C_M_RECV_LEN) == 0 &&
 			    msgs[0].len > 0 && msgs[0].len <= 2 &&
-			    msgs[1].len > 0 && msgs[1].len <= 8 &&
+			    msgs[1].len > 0 &&
 			    msgs[0].addr == msgs[1].addr) {
-				if (msgs[1].flags & I2C_M_RD)
-					ret = octeon_i2c_hlc_comp_read(i2c, msgs);
-				else
-					ret = octeon_i2c_hlc_comp_write(i2c, msgs);
-				goto out;
+				if (msgs[1].len <= 8) {
+					if (msgs[1].flags & I2C_M_RD)
+						ret = octeon_i2c_hlc_comp_read(i2c, msgs);
+					else
+						ret = octeon_i2c_hlc_comp_write(i2c, msgs);
+					goto out;
+				} else if (msgs[1].len <= 1024 && OCTEON_REG_BLOCK_CTL(i2c)) {
+					if (msgs[1].flags & I2C_M_RD)
+						ret = octeon_i2c_hlc_block_comp_read(i2c, msgs);
+					else
+						ret = octeon_i2c_hlc_block_comp_write(i2c, msgs);
+					goto out;
+				}
 			}
 		}
 	}
diff --git a/drivers/i2c/busses/i2c-octeon-core.h b/drivers/i2c/busses/i2c-octeon-core.h
index b265e21189a1..fecaf7388182 100644
--- a/drivers/i2c/busses/i2c-octeon-core.h
+++ b/drivers/i2c/busses/i2c-octeon-core.h
@@ -96,18 +96,28 @@ struct octeon_i2c_reg_offset {
 	unsigned int twsi_int;
 	unsigned int sw_twsi_ext;
 	unsigned int mode;
+	unsigned int block_ctl;
+	unsigned int block_sts;
+	unsigned int block_fifo;
 };
 
 #define OCTEON_REG_SW_TWSI(x)		((x)->roff.sw_twsi)
 #define OCTEON_REG_TWSI_INT(x)		((x)->roff.twsi_int)
 #define OCTEON_REG_SW_TWSI_EXT(x)	((x)->roff.sw_twsi_ext)
 #define OCTEON_REG_MODE(x)		((x)->roff.mode)
+#define OCTEON_REG_BLOCK_CTL(x)	(x->roff.block_ctl)
+#define OCTEON_REG_BLOCK_STS(x)	(x->roff.block_sts)
+#define OCTEON_REG_BLOCK_FIFO(x)	(x->roff.block_fifo)
 
-/* Set REFCLK_SRC and HS_MODE in TWSX_MODE register */
+/* TWSX_MODE register */
 #define TWSX_MODE_REFCLK_SRC	BIT(4)
+#define TWSX_MODE_BLOCK_MODE	BIT(2)
 #define TWSX_MODE_HS_MODE	BIT(0)
 #define TWSX_MODE_HS_MASK	(TWSX_MODE_REFCLK_SRC | TWSX_MODE_HS_MODE)
 
+/* TWSX_BLOCK_STS register */
+#define TWSX_BLOCK_STS_RESET_PTR	BIT(0)
+
 /* Set BUS_MON_RST to reset bus monitor */
 #define BUS_MON_RST_MASK	BIT(3)
 
@@ -123,6 +133,7 @@ struct octeon_i2c {
 	void __iomem *twsi_base;
 	struct device *dev;
 	bool hlc_enabled;
+	bool block_enabled;
 	bool broken_irq_mode;
 	bool broken_irq_check;
 	void (*int_enable)(struct octeon_i2c *);
diff --git a/drivers/i2c/busses/i2c-thunderx-pcidrv.c b/drivers/i2c/busses/i2c-thunderx-pcidrv.c
index 143d012fa43e..0dc08cd97e8a 100644
--- a/drivers/i2c/busses/i2c-thunderx-pcidrv.c
+++ b/drivers/i2c/busses/i2c-thunderx-pcidrv.c
@@ -168,6 +168,9 @@ static int thunder_i2c_probe_pci(struct pci_dev *pdev,
 	i2c->roff.twsi_int = 0x1010;
 	i2c->roff.sw_twsi_ext = 0x1018;
 	i2c->roff.mode = 0x1038;
+	i2c->roff.block_ctl = 0x1048;
+	i2c->roff.block_sts = 0x1050;
+	i2c->roff.block_fifo = 0x1058;
 
 	i2c->dev = dev;
 	pci_set_drvdata(pdev, i2c);
